<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button  >按钮</button>
    <button  >按钮1</button>
    <button  >按钮2</button>
    <button  >按钮3</button>
    <button  >按钮4</button>
</body>
<script>
      

</script>
</html>